Friction-clutch.



VPatented Vmy 3|, i900.. E. TOOLE.

FRICTION CLUTCH.

(Application led Har. 19, 1900.)

(No Model.)

1w; Nonms mns co.. mcm'ma. msumcron u c NITE- @STATES l EDWARD TooLE, oE GLOUCESTER CITY, NEW JERSEY, AssIeNoR or oNE- I-IALE To WILLIAM E. EoKUM, oE PHILADELPHIA, PENNSYLVANIA.

FmcTIoN-CLU'TCH.

SPECIFICATION forming part ofLetters Patent No. 655,132, dated July 31, 1900.

Applicant fue@ Math 4It, 1900. serial No. 9,245. (No man.)

To (LEZ whom it may concern:

Be it known that I, EDWARD TOOLE, a citi-j zen of the United States, residing at Gloucester City, Camden county, New Jersey, have; 5 invented certain Improvements in Friction- Clutches, of which the following is a specification.

My invention relates to certain improve--4 ments in jaw friction-clutches, in which a Io which are actuated by-lever mechanism. j

The object of my invention is to so construct a clutch of this character that a positive and firm grip can be had upon the clutchrim, to provide means for adjusting each clutch shoe, to dispense with the use of springs, and to so proportion the parts that the jaws will be released through centrifugal force after the first movement of thereleasing mechanism. y

In the accompanying drawings, Figure l is a sectional view of my improved clutch, showing the jaws in engagement with the rims; and Fig. 2 is a View looking in the direction of the arrow, Fig. 1.

A is a driven shaft. is a hub B.

C is a sliding clutch-sleeve.

D is a pulley loose on the shaft. On the pulley D is an annular clutch-rim (Z. Projecting from the hub B in the present instance are four arms B', carrying bearings b and b. Adapted to each bearing b is a sliding jaw E, which'presses against the inner periphery of the clutchrim.` Adapted to each bearing b is a jaw F. This jaw is L-shaped and presses upon the periphery of the clutch-rim, so that Ithe rim is held between the two jaws E and F. The jawE is provided with a detachable bearing-blocke, and the jaw F is provided with a detachable bearing-block f. These blocks are preferably made of wood, although they may be made of any material suitable for the purpose.

Fulcrumed at g to the hub B are levers G. Each lever is connected by a link e' to the jaw E and connected at its outer end to the sliding sleevelC bya link c. I provide these links c with turnbuckles o', so that they can 5o be lengtheued or shortened, as desired. Any

Splined to this shaft clutch-rim is held between a series of jaws` release the pulley.'

Pivotedat 7L to each arm B of the hub B is a lever H, connected by a link fA to the jaw F. vIn the present instancethe link is connected to a screw-bolt f2., passing through the jaw and having nuts by which the jaw can be adj usted independently of the jaw E. The outer end of the lever H is preferably slotted, 6o and adapted to the slot is a pin carried by a short arm g of the lever G, so that when the sleeve C is moved toward the hub B it forces the jaws E out against the rim, and at the same time presses the jaws F in toward the rim, so that the rim is confined between the two jaws. When the sleeve is moved out, so

as to disengage the pulley, the first movement of the sleeve will cause the jaws E to move in and the jaws F to move out. It will be 7o noticed that the jaws F are much heavier than the jaws E. Consequently as soon as the jaws E are released the jaws F will be thrown out by centrifugal force, and as these jaws are connected to the jaws E by the levers the jaws E will be moved at once away from the rim. By this construction objectionable springs are avoided and the construction of the clutch simplified.

The pulley may be driven from the shaft 8o A through the clutch mechanism, or the pul ley may be the driver and the shaft the driven element, and I may also use a different form of pulley without departing from my inven tion, and in some instances it may be a clutchhub adapted to an independent shaft, which may be driven or may act as the driver.

i I claim as my inventionl. Thecombination of a shaft, a pulley, a clutch-rim on the pulley, a hub on the shaft, 9o arms carried by said hub, bearings in said arms, inner and outer jaws carried by the bearings and engaging `the clutch-rim, levers pivoted to the hub and connected to the inner jaws, an operating-sleeve connectedy to the outer end of said levers, and a second set of levers pivoted to the arms and connected to the outer jaws and to the other set of levers, so that the two sets of j awswill act in unison, substantially as described.

arms carried by said hub, bearings in said arms, inner and outer jaws adapted to the bearings and to engage the clutch-rim, levers pivoted to the hub and connected to the inner jaws, an ("ipierating-sleeve connected to fthe outer end of said levers, a second set of levers pivoted to the arms and connected to the outer jaws and to the other set of levers, so that the two sets of jaws will act in unison, and means for adjusting the outer set of jaws independently of the inner set, substantiallyas described. s Y Y j 3. The combination of a shaft, a hub on the shaft, arms on the hub, boxes on the arms, 'inner and outerjaws adapted to slide in the boxes, a rim 'with which the jaws engage, a lever G pivoted to the hub, a link connecting the lever with the inner jaws, anoperatingsleeve, a link connecting the operatingesleeve f with the lever, a pivote'd lever, a link connect- 'ing the pivoted lever with the outer jaw, saidlever being connected to the nrstementioned lever, so that when the sleeve is moved the a hub on the shaft, arms carried by and be- 3o ing integral with said hubs, guides on said arms, outer and. inner jaws. constructed to yengage said clutch-rim and movable in said guides in a plane at right angles to the shaft,

a lever having the fulcrum at one end with 35 a link connecting same with the inner jaws, and a lever with the fulcrum away from the ends and linksconnecting same with the outer jaws, said leversbeing connected at one end,

a sliding clutch-sleeve and adjustable links 4o connecting said sleeve with the said ends. v j

In testimony whereof I haveV signed vmy Danie to this specication in the presence of two sbs'cribin g witnesses. f

EDWARD TOOLE.

lever n Witnesses:

JOHN W. TAGGART, WILL A. BARR. 

